CVE-2025-21486 Untrusted Pointer Dereference in DSP Service
An attacker can exploit untrusted pointer dereference in the DSP service to achieve memory corruption and potential code execution on Qualcomm Snapdragon devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-21486?
CVE-2025-21486 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 3 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption during dynamic process creation call when client is only passing address and length of shell binary.
Weakness: CWE-822
Which versions are affected by CVE-2025-21486?
It affects 31 products.
Products include Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qmp1000 Firmware, Qualcomm Sm8735 Firmware, Qualcomm Sm8750 Firmware, Qualcomm Sm8750p Firmware and 25 more.
How do I fix CVE-2025-21486?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21486 being exploited?
There is no known exploitation of CVE-2025-21486 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 6900 Firmware
Sources
Also known as 3986528, A-400449990, ASB-A-400449990, GHSA-39fm-j66r-ffj4.